U+01D8 "ǘ" Latin Small Letter U with Diaeresis and Acute Unicode Character
Unicode Version 17.0
ǘ
U+01D8 "ǘ" Latin Small Letter U with Diaeresis and Acute is a precomposed diacritic combination used primarily in languages that require precise tonal or stress marking, such as Mandarin Chinese in the Bopomofo or Pinyin romanization systems, where it represents the second tone (rising tone) on the vowel "ü". The diaeresis (two dots) indicates that the "u" is pronounced as a close front rounded vowel, distinct from a plain "u", while the acute accent denotes the specific rising pitch contour. This character is part of the Latin Extended-B block and simplifies text processing by encoding both diacritics into a single code point, avoiding the need for combining marks and ensuring consistent display across different fonts and platforms.
General Properties
| Code Point | U+01D8 |
| Version Added | 1.1 |
| Name | Latin Small Letter U with Diaeresis and Acute |
| Unicode 1.0 Name | Latin Small Letter U Diaeresis Acute |
| Block | Latin Extended-B |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "ü" U+00FC Latin Small Letter U with Diaeresis "́" U+0301 Combining Acute Accent |
Encodings
| HTML Decimal Encoding | ǘ |
| HTML Hex Encoding | ǘ |
| UTF-8 Encoding | 0xC7 0x98 |
| UTF-16 Encoding | 0x01D8 |
| UTF-32 Encoding | 0x000001D8 |
| C/C++/Java Escape | \u01d8 |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| East Asian Width | Ambiguous |
| Lowercase | Yes |
| Simple Uppercase Code Point | "Ǘ" U+01D7 Latin Capital Letter U with Diaeresis and Acute |
| Simple Titlecase Code Point | "Ǘ" U+01D7 Latin Capital Letter U with Diaeresis and Acute |
| Uppercase Code Point | "Ǘ" U+01D7 Latin Capital Letter U with Diaeresis and Acute |
| Titlecase Code Point | "Ǘ" U+01D7 Latin Capital Letter U with Diaeresis and Acute |
| Cased | Yes |
| Changes When Casemapped | Yes |
| Changes When Titlecased | Yes |
| Changes When Uppercased | Yes |
| Script | Latin |
| Script Extensions | Latin |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Lower |